Prevent sanity from converting JPEG image uploads from CMYK to sRGB

[donalffons]

We are using Sanity for managing printed brochures and noticed the following issue: For our use case, we have certain JPEG images that have a CMYK colorspace and this colorspace must be preserved in our output. However, when I upload a CMYK JPEG image to Sanity and re-download the file, it appears that Sanity converts the uploaded image to sRGB automatically.

Is there a way to disable this conversion, while still being able to use the "image" type?

Here is the original image (the upload to Github preserves the color space)

$ identify -verbose cmyk-test.jpg | grep Colorspace
  Colorspace: CMYK

Here is the image after upload to and download from sanity:

$ identify -verbose cmyk-test-downloaded-from-sanity.jpg | grep Colorspace
  Colorspace: sRGB

[donalffons]

Just a friendly reminder: This is still an issue for us and we would greatly appreciate it, if someone could look into this. Thank you 🙂.

[sgulseth]

Hi @donalffons ! I'm sorry, I forgot to update the ticket here - we released a fix last week where you can now specify cs=origin to preserve the original image color space. See https://www.sanity.io/docs/apis-and-sdks/image-urls#cs-cbab5b5df48d for other options.

[github-actions]

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